Water heatek



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Patented Oct. '1, 1929 EDWAED A. rEDIGo, E oxoLoNA, KENTUCKY WATER Application. led May 7,

This invention relate-s to improvements in water heaters, and has for one of its priI1-' .cipal objects the provision of heating means for water which will be entirely self-contained in its operation, and which, moreover, can be used with equally good results in homes and also in factories or the like.

One of the important objects of this invention is to lprovide a water heater' which will 1o insure a supply of hot water at all times at a minimum othe-ating expense.

- Still another important object of this `in vention is the provision, ina Water hea-ter, of means whereby lhot water can be immediately obtained from a constantly main'- tained reserve, and kurt-her' means for 1n-l st-antaneously delivering hot water,leven in more full the absence of such reserve.

Other .and further important objects of the invention will be apparent from the disclosures in the accompanying drawing and following specification. i

The invention, in a preferred form, is illustrated inet-he drawings and hereinafter described.

In the rawings: Y

Figure 1 'is a vertical elevation, partly in section, illustrating the construction land operation of `the improved automatic water heater of this invention.

Figure 2 is a horizontal sectional view, taken on the line 2-2 of Figure 1.

Figure 3 is a partial sectional view, taken on the lines 3 3 of Figure 2.

As shown in the drawings: The reference numeral indicates generally a tank or container for hot water, the same being enclosed 1n a heat insulating cover 12. Adjacent the tank 10 is a heater element 14 having a plurality of coils' 16 therein, adapted tobe heate-d by means of a burner 18. The coils 16 are supplied with cold water from an inlet pipe 20, and from an inspection of Figures 2 and 3 it will be evident that these coils are of av special construction adapted to more eliiciently utilize the heat from the burner 18.

Each lof the coils comprises a series of pipes attached to a central header or the like 22, having a plurality of arms, to the end of each HEATER 192s. serial No. 107,402.

arm being fitted, by meansof a coupling or the like, a U-shaped pipe-for carrying the water. Each connecting header 22'is formed 1n one section, as best illustrated in Figure 3, and 1n this manner the entire heatingunit 55 can be readily assembled and disassembled.

A connecting pipe 24 leads from the top of the casing 14 and from the heating coils to the bottom of the container l0, a springn controlled check valve 26 being provided in 60 the pipe 24 adjacent the tank 10A for preventlng any return Iiow of the heated Water. A second pipe 28. leads out from the bottom of the tank 10 and is connected to a standpipe. 3() to insure an equal pressure in the system 65 at all times, the bottom of the standpipe 30 being connected to the intake pipe 20`by a connection 32 in which is positioned a springcontrolled check valveI 34. The tension of this spring is such that water will not flow 7U from the tank 10 into the intake pipe 20 until -the pressure in the system vis at least greater than that in the intake pipe 20. thereby efn fectively preventing accidents. v

An outlet pipe 36 is positioned in the 75 top of the tank 10, whereby the heated water may be drawn 0H by means of a delivery pipe 88, land a safety" air orsteam valve. 40 is attached at this point. Also connebted to the supply pipe 38 and joining the heating 80 coils 1G in the casing 14 is a connecting pipe 42 having a stop cock 44 therein, the stop y cock 44 being-normally closed. but adapted to be opened when a supply of hot water is desired immediately at such time when the S5 water in the tank 10 is cold.

The operation is as follows:

'The burner 18, which may be gas or any other desired or suitable medium, being put into operation, will heatthe water in the coils 16, and such heated water will then automatically flow int-o the tank 10 .past the check valve 26. This heated Water will rise to the top of the tank l0, and the temperature ot the water in the tank will gradually increase as long as the burner is in operation. Any excess air or steam will be expelled'through the safety valve 40, and in the event that the pressure grows too great the check valve 34 will open, allowing the pressure in the entire sys- 100 tem to approach that in the intake pipe 20, y

the difference being regulated by the tension of the spring 34.- Hot water asdeslred can be Withdrawn by means of the pipe 38, the tank 10,and the associated piping system remaining full at all times.

It Will be evident that herein 1s provided an eicient and economical heating plant for Water or the like which is entirely self-contained in operation and which will insure an adequate supply of hot Water at all times. Further, hot Water can be delivered by means of this device at practically instantaneous notice. I The regulation of the pressure in the 'system is further'entirely automatic, and so governed as to insure absolute safety at all I am aware that many changes maybe made and numerous details of construction varied throughout a Wide range Without de arting from the principles of this invention,

and I therefore. do not purpose limiting the patent granted hereon otherwisethan as necessitated by the Aprior art. A I claim as my invention: l

-1. In a hot Water heater. a heating element comprising a plurality of U-shaped lengths of pipe adapted to be vertically disposed, cenl`vtral horizontal headers, means for connecting said U-shaped pipes to the central headers, each of said headers comprisingarms on two levels, and passages centrally connecting said arms `for supplying Water to said Ulshaped pipe sections.

2. In a hot Water heater, a hea-ting element comprising a plurality off-U-shaped-lengths of pipe adapte-d to be vertically disposed7 central horizontal headers, means for connecting said U-shaped ipes to the central headers, each of said eaders comprising arms on two levels, and passages centrally connecting said arms. for supplying Water to said U-shaped pipe sections, the arms being equally spaced around the headers orminga maximum `heating surface. A

In testimony whereof I ax my signature.

, EDWARD A. PEDIGO-` 

